Brush



C. SMITHJ.

BRUSH.

APPLICATION FILED APR. 4, 19:21.

1,363,282, I Patented Dec. 28,1920.

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UNITED STATES CHRISTIAN SMITH, 0F DETROIT, MICHIGAN.

BRUSH.

Specification of Letters Patent. Patented Dec, 28, 1920.

Application filed April 4, 1913. Serial No. 226,559.

To all whom it may concern.

Be it known that I, CHRISTIAN SMITH, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Brushes, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the artto which it pertains to make and use the same, reference being had to the accompanying drawings,-which form a part of this specification.

This invention relates to brushes and brush blocks therefor, and a primary object of the invention is to provide a brush in which the bristles are permanently maintained in such angular or flared relation with the block to enable the brush to be used in corners of a room, or of an article being cleaned as a counter or display case, without liability of striking the block against portions of the structure being cleaned. A further object of the invention is to provide a brush block permitting the use of short bristies and lessening the cost of the brush without detriment to the eificiency thereof, and further providing a brush in which the majority of bristles are practically half the length of the marginal row of bristles giving the brush the appearance of a full-bristled brush. A further object is to provide a brush in which the longer row of marginal bristles are supported at an angle to a vertical plane partly by the block and partly by the short bristles tending to prevent curling of the long bristles beneath the block resulting in a brush serviceable for a longer pe riod of time than is usual with brushes of ordinary construction. These several ob jects and novel features of the invention are hereinafter more fully described and claimed and shown in the accompanying drawings in which- Figure 1 is a front elevation of a brush and brush block embodying my invention.

Fig. 2 is a cross section taken on line wm of Fig. 1.

It is to be understood that the brush block may be made for various brushes, for instance a floor brush, window brush, counter brush or any other type of brush that may be desired, and that the general design and form of the block will vary depending upon the type of brush to be made. All of the blocks and brushes. however, of any type may readily embody the invention herein disclosed and which is illustrated principally in Fig. 2 in which the block 1 practically midway between the upper and lower horizontal faces is provided with a shoulder 52 upwardly inclined at an angle to the horizontal. This shoulder extends completely around the bloclr 1 as will be understood from Fig. 1 and a marginal row of apertures or recesses 3 drilled therein at practically a right, angle to the face of the shoulder and comparatively long bristles 4 are inserted and secured therein in the usual manner in which bristles are fixed in position in the blocks. Instead of the apertures 3 as shown the shoulder 2 may be otherwise adapted to maintain the bristles in position and any mode of fastening may be employed as may be desired. In any event the bristles extend downwardly from the shoulder at an angle so that the bristles are flared outwardly from the block whereby the terminal ends of the marginal row of bristles form an outline greater in perimeter than the outline of the block whether oblong or rectangular as shown or other form. The block is also provided with what I have termed an extension 5 beneath the peripheral shoulder 2 and having a face on each side occupying a plane at the same angle to the horizontal as the axis of the apertures 3 or the longitudinal axis of the bristles supported by the shoulder. The angular face of the extension 5 provides a-support for the marginal row of brrstles tendlng to prevent the same from turning beneath the block as is usual in brushes not provided with such an extenslon.

Heretofore brush blocks have been drilled or provided with channels or the like so positioned that the bristles normally set at an angle to the block but in use such bristles become permanently bent out of original position which is detrimental to the usefulness of the device, but by providing a block having a portion extending below the point of attachment of the marginal bristles, these bristles lie against the angular face. of the extension which prevents the bristleslfrom being turned permanently beneath the block whereby the usefulness and life of the brush is enhanced and a block is provided in which the bristles prevent the block from, being readily brought into forcible contact with parts of the article being cleaned. It a is eel tension are formed .at such an angle'that,in

cross section as shown in Fig. 2, the width of the lower face of the extension combined with the thickness of thetwo tufts on opposite sides is greater than the width of the block proper in which the marginal bristles are mounted. The usefulness of such construction is illustrated in Fig. 2, in which a dotted line 50 indicates a corner of an article, as for instance a china cabinet, and from which it will be noted that the block proper may not be readily brought forcibly in contact with the cabinet as the bristles maintained in position by the extension would first contact the article and prevent the head of the block from striking the same. This feature of course is serviceable in the cleaning of any device as for instance the corner of the floor when it is not desired to strike the base board. The bristles by the construction shown would be maintained to position at such an angle that the corners'could be thoroughly cleaned and the block not come in contact therewith. 7

It is further to benoted that the block is formed with the bristles extending entirely about the block bothsides and ends being provided with the marginal angularly positioned bristles as isillustrated. The lower horizontal face of the block is also provided preferably with a series of apertures 10, the marginal rows of which are positioned at an angle and the rows are gradually changed in angle to nearly vertical at the center so that the entire lower face of the extension is covered with tufts which are comparatively short in length resulting in a saving of stock and providing a more serviceable brush in that these center rows fof bristles are perceptibly stiffer in action to give the desiredcleaning effect and the marginal bristles of the said lower face being at an angle support the free ends of the long bristles supported from the shoulder 2 of the block and prevent the lower ends thereof from being permanently curled beneath the block.

From the above it will be readilyunderstood that a brush is provided that is of great utility in that the brush may be used without liability of striking the article to be cleanedand that a more thorough cleaning may be had by reason of the stiffer bristles carried by the extension as described, and thatan article considerably cheaper and of longer life than the usual brush is pro- Having thus fully described invention 'what I claim isr 1. In a brush, a block provided with an upwardly inclined peripheral shoulder between the upper and lower horizontal faces thereof, the sides of the block below the shoulder being formed substantially, at a right angle tothe said shoulder, and a marginal row of comparatively long bristles 'the point of meeting the shoulder at an angle to a vertical plane, the width across the lower face of the block being substantially equal to the greatest width thereof, the upwardly inclined face of the shoulder being adapted to support a marginal row of comparatively long bristles contacting the adjacent angular face of the lower portion of the block, and a plurality of rows of short bristles terminating in the same plane as the longer bristles supported in the lower face of the block and flared to support the free ends of the long bristles.

3. A brush block having a peripheral shoulder intermediate its upper and lower face positioned at an angle toa horizontal plane, the face of the portion of'the block below the shoulder being formed at sub stantially a right angle to the face ,ofthe shoulder, the shoulder being drilled at a right angle to the face thereof, a series of comparatively long bristle tufts in the recesses provided therefor and a plurality of rows of short length bristles inserted in the lower face of the block, the outer row of short bristles being positioned at an angle to a vertical plane to support the said longer bristles and the inner rows gradually changing in angle to practically vertical position at the center of the block.

4. A brush blockhaving a peripheral substantially right-angled recess formed in the sides thereof, the walls of the recess being at an angle to a horizontal and vertical plane respectively, amarginal row of bristles carried in the shoulder formed by the notch and lying against thev other wall thereof and a plurality of intermediate. rows of bristles, the outer row of which is positioned at an angle to the vertical plane to provide a support for the marginal row, the intermediate rows gradually altering forming an angle to a vertical plane to occupy a vertical position at the center. g

5.;In a brush, a block provided with an upwardly inclined peripheral shoulder between the upper and lower horizontal faces thereof, the sides of the block below the shoulder being formed substantially at a right angle to the said shoulder, a marginal row of comparatively long bristles supported in apertures provided in the shoulder and contacting the said angular disposed sides of the block, and a series of-rows of short bristles being. flared to support the lower ends of the long bristles and succeeding rows of short bristles gradually altering in angle to occupy a vertical plane at the center.

6. In a brush, a block provided with an upwardly inclined peripheral shoulder between the upper and lower horizontal faces thereof, the sides of the block below the shoulder being formed substantially at a right angle to the shoulder, said shoulder having a series of recesses formed therein, each having its longitudinal axis parallel to the plane of the said sides, the lower horizontal face of the block having tuft recesses formed therein in substantially parallel rows, the longitudinal axes of said recesses of the several rows from the inner to the outer row transversely of the block gradually changing in position from a vertical plane to an angle to the vertical.

In testimony whereof I sign this specification.

CHRISTIAN SMITH. 

